Stupid question, when you submit your GPA to College Apps, does it include Senior Year grades?

So you submit your GPA that’s the average of freshman, sophomore, junior, and senior (however much you’ve completed) grades?

Yes - if you are applying in the fall of your senior year, you will have 3 years of grades (freshman, sophomore, junior). If using the common application, there is a form for your school to send mid-year grades. Also, on the common app, you will list what classes you are taking senior year.

You need to ask your HS counselor how/when your school calculates GPA. My HS did not recalculate GPA in the middle of senior year (even if a class was completed) but other schools may.